Chuck



Aug. 10 1926. 1,595,865

B. M. W. HANSON CHUCK Original iled August 20,1921

Patented Aug. 11C,- 1926 umran- 'srgrss PATENT OFFICE.

IBENG'I. M. W; HAN CON, OF HARTFORD, CONNECTICUT; EINAR A, HANSON AND CLAIR- 'ENCE E. WH ITNEY EXECUTOBS OF SAID BENG'1 M. W. HhNSON, DECEASED.

annex.

Original aiiplication ine d August 20, 1921, Serial ms. 498,780. Divided and this application filed L 1 December 20, 1922. Serial- No. 608,084

The present application is a divisional of my original application Serial No. 493,780, filed August th,'1921', for improvements in grinding machine. The present invention relates to a chuck, and the aim of the invention is to providea device of this sort having various features of novelty and" advantage. More particularly, the invention has as its purpose to provide a chuck which may be readily adjustable to hold pieces of work of different sizes and types, which is; readily operable in that pieces of work may be quickly inserted and removed from place within the same, andwhich is rovided with means whereby the chuck may e trued so as to hold objects in proper alinement.

In the accompanying drawing, wherein I have shown, for illustrative purposes, one embodiment which the present invention may take,

Fig. l is a view takenlongitudinally and centrally through my 7 proved chuck;

Fig. 2 is a front view, and

Fig.'3 is a sectional View taken -.on line 3-3' of Fig. 2.

Referring to the drawing in detail, a denotes, generally, my improved chuck, and b a spindle of any klnd to which the chuck is secured, as by means of screws 0 or the like. Thechuck com rises'a chambered head or annular bod 0 provided with clamping members orolts 11 which are arranged as follows. In the annular wall of the head 10 are the recesses 12, preferably three in number sand in each of these re sses is a 'nut 13 keyed against turning as at 14 and receiving the inner end of the clamping bolt 11; Also, in each recess is a bushing 16 engaging at its inner end against the nut 13. Each bushing 16 is adjustable lengthwise by screws 17 carried by the head 10 and overhanging the bushing. When it is desired to adjust the clamping members to accommodate a piece of work of given dimensions, the screws flare turned so as to longitudinally adjustthe sleeves 16. If the ings 16 are forced-inwardly and with them the nuts 13 so that the-headsof'the bolts 11 re brought nearer to the shoulder or seat f the chuck body lOand against which seat the work is adapted to engage. If a piece-of work of greater thickness is to be accommodated within the chuck, then the'screws 17 screws 17 are screwed inwardly, the bush-' been longitudinally adjusted, when it is desired-to place a piece of work within the chuck, the bolts are turned to the dotted line positions shown in Fig.2, the work is inserted, a (1 then the bolts are turned to the full lin d' ositions shown in Figs. 1 and- 2 and in which positions the heads oftho bolts overhang and engage the outer surface of the work. It will be seen that with this arrangement, the .clamping members may be readily and accurately adjusted to accommodate pieces of work, for instance-ball bearing rings,'of difierent lengths, and also take up wear; also, the clamping members may be quickly turned into and out of overhang- 'ing engagement with the work so that the latter may be quickly inserted and removed from place within the chuck. As stated in my aforesaid.original application, the chuck is peculiarly adapted for use "in holding ball race members during the grinding operation of the 'same,;but, of course, the. chuck isapplicable to other uses. In Fig. 1 of the accompanying'drawing, a double ball race is shown by dotted lines held in position in t the chuck.

Removably secured to the bottom face of the head 10 is a ring 20 having a plurality, preferably three, lands or spots 21. Carried by the side wall of the chuck body are spots 22 which are preferably in the form of studs secured in place nuts 23.,so that they may be readily positioned and removed from place. Ihe advantage of these spots is that y properly grinding them after they are 1 positioned in the chuck body they maybe I correctly trued up. to hold the object to be operated upon in the proper alinement. Shims 24 are provided to take up wear in the spots 22.

As is shown in igures land 2 the spots .22 are provided with non-circular headsand fit in recesses which are correspondingly shaped, so as to hold the spots from turning after they have been properly ground and trued thehea'ds' also serving to support the shims 24 against the bottoms of the recesses in which the heads are placed to provide a substantial support for the heads of the spots. The heads of the spots 22' are thus 'held 'fron turning out of position so that theirgrinding and location may be accurate.

It is, of course,.obvious that my invention is susceptible of various modifications and changes which are Within the spirit of the invention Without departing from the scope of the following claims, it being understood that the present disclosure of my invention is'by Way of illustration only and it is not to be taken as'restrictive of my conception.

I claim as my invention 1. A chuck including a chambered'body having spot receiving openings in the Walls thereof and provided with non-circular recesses at the innerends of the openings facing the interior of the body, and a plurality of removable spots and having heads with end faces having flat fitting in said openings concave seats toengage and spot cylindrical Work, seating in and conforming in shape to the recesses for holding thespots from rotation after the same have been ground and located.

2. In a chuck, a body portion having a re cess therein, a nut fitting in the recess and held against rotation. therein, bolt threaded in the nut and extending out- Wardly overhanging jaw on its outer end, a bushing slidably fitting in the recess against said nut, and adjustable means at opposite sides of the clamping bolt and engaging the opposite sides of the bushing for holding the same adjustably in said opening.

. BENGT M. W. HANSON.

of the body portion and having an a clamping 25 

